Typewriting machine frame



Jan. 12, 1932. M GARBELL 1,841,114

TYPEWRITING MACHINE FRAME Filed Dec. 14, 1927 4 Sheets-Sheet l Jan. 12, 1932. M, GARBELL 1,841,114

TYPEWRITING MACHINE FRAME Filed Dec. 14, 1927 4 Sheets-Sheet 2 AMM Jail. 12, 1932.

M. GARBELL 1,841

TYPEWRITING MACHINE FRAME Filed Dec. 14, 1927 A 4 Sheets-Sheet 3 Jan. 12, 1932. M, @Ai-BELL 1,841,114

TYPEWRITING MACHINE FRAME Filed Deo. 14. 1927 4 Sheets-Sheet 4 20 ber of transverselyextending plates 25 comprehend Patented Jan.| 12, 1932I UNITED STATES PATENT OFFICE r f MAX GARBELL., OF CHICGO, ILLINOIS, ASSIGNOR T0 VICTOR ADDING MACHINE COMPANY, F CHICAGO, ILLINOIS, A CORPORATION 0F ILLINOIS TYPEWRITTNG MACHINE Fmr.

Application led. December 14, V1927. Serial No. 239,821.

My invention relates to typewriting machinesand it has particular relation to frame portions of such machines.

I will hereinafter more fully point outa v method of producing a typewriting machine at a minimum cost of production. As one of the features contributing to this inexpensive structure I propose to utilize the hereinafter described frame member which comprises a minimum number of parts, each of which having 'bottom and sfide walls, by drawing.

After having drawn the aforesaid box-like structure as the basis of my typewriting inachine frame, I complete said structure by 1nterftting with said box-like member a numwhich plates are adapted not only to complete the aforesaid frame structure and produce aclosed key-board machine, but at the same time are intended, when in built-up form, to

umembers formingpart of my machine action. These members and the action of which they y form a part are more particularly .described and claimed in my copending application Serial No. 239,386, iled December 12, 1927.

The frame members utilized in constructing my invention' and the hereinafter described method of assembling the same are particularly and definitely developed to coordinate with the action members of the machine so that said machines may be assembled very rapidly and cheaply, wherefrom the cost of producing the machines is reduced to a minimum. In; this connection, as hereinafter emphasized, the aforesaid frame and transverse plate members are slotted to receive vertically extending portions of the key-operated membersrsothat the placement of said members in operative position in the machine is a very simple proposition.

The advantages of the aforesaid frame and the method of assembling the same'in connection with said key-operated members will guidewaysu for key-operated i be better understood in connection with the accompanying drawings, in which Figure 1 is an elevational, perspective view of av machne embodying my invention and assembled in accordance with the method hereinafter disclosed;

Fig. 2 is an elevational view of the frame member of the aforesaid machine stripped of nearly all the operating arts and partially in cross-section to disc ose some of the essentials of my invention; v y

Fig. 3 is a perspective view, partially in cross-section, of some of the basicelements of myv frame member; and,

Fig. 4 illustrates the transversely extending plate members which, by means of my invention, are interitted with the base memberQ shown in Fig. 3.

Referring to the drawings, a base or boxlike member 10 is first formed by drawing or otherwise, it being my intention to so form and assemble the elements of my machine as to radically reduce the vcost of roduction thereof. The said box-like portion of the structure 10 comprises a bottom 11, a rear wall 12a front wall 13, and side Walls 14 and 15. Extending transversely across the front portion of the structure 10 are strengthening elevated plates or girder-like members llaand 11b, for purposes which I will hereinafter describe.

It will be observed that the said box-like structure comprehends the base member of a vtypewriting frame. A series of plates 16 to 20, inclusive, are next stamped, or'otherwise suitably formed,'to be intertted' with the structure 10 fon forming a typewriting ma- `chine frame of the closed key-board t invention is not, of course, so limited), ofy

double thickness. A leg or web 2 2 extends described box structure 10. The plates 17, 18.

19 and 20 are each provided with a series of slotted portions 25, it being observed that A which project forwardly and beyond the f said portions are produced by slots struck inwardly from the fronts ofthe lower portions 21.

As hereinbefore indicated, the said lower portions of bars 17, 18, 19 and 20 are of double thickness, the upper thickness of said lower webs being designated as 21a and the lower thickness or layer as 2lb, it being noted that the upper layers 23 of veach of the bars are of such size that they are accurately rcceived by and rest upon the thicknesses 215 edges of the upper thicknesses 21a of the lower portions of the bars.

The lowermost plate or bar 16 may be properly termed the space-bar plate and is provided with but two slots 26, which slots are formed in recessed or depressed portions 27. of the lower web of the plate. Members 28 areformed complemental to the depressed portions 27 and are provided with slots 29 formed oppositely to the slots 26. I will describe the Afunction of the complemental formation of the space-bar plate and securing members at a later point in this specifi-- cation.

It is not deemed necessary to elaborate upon the formation of the top-most plate No., 20, since it will be seen that it is formed as the top plate of a typewriter frame having a vertical wall 22a curvilinearly formed at the rear thereof to comprehend a pleasing sweeping curve and to conceal the tops of any type bars. such as 30. Said top plate is also provided with the double thicknesses or layers 21a and' 2lb in its bottom web as heretofore indicated, and has ears 24 bent downwardly at either end thereof for securing purposes.

To understand more thoroughly the reason for my novel frame structure and the manner in which it may be expeditiously assembled in I combination with the remaining elements of my key action reference may be had to Fig. 2

'f hereof and also to my copending" application, Serial No. 239,336, filed December 12, 1927,

in which said action is more fully described.

Said action comprises a series of key operated members 31. In some places I may refer to these members as levers, although they are in no sense pivoted, but rather move entirely rectilinearly and in La truly vertical direction. q However, the industry and art.

have come to designate any and all members which carry a key struck by the linger as key levers, and it may,'therefore, benecessary, in order to conform with the phraseology of the industry, to refer to these members as levers.

n2LS/aid key members 31 comprise front vertical portions 32 and rear vertical portions 33.

It will be observed that thel front portion 32 carries a key 34 on its upper end. Moreover, the slots 25 form guideways for said portion 32 and a complemental guideway 35 is formed in the plate 11a, which as heretofore described, extends transversely of the frame under the enclosing plate structure. Furthermore, a spring 36 is positioned between a lu` 37 and the horizontally extending part o the key `member comprehending one. stop, and the plate 11a comprehending the other depressed the spring 36 is stressed. Thereafter, when the finger pressure is relieved said key member is returned to normal position.

A further guide insuring true vertical motion of the key member is provided by slots 38 in a segment 39 in which segment the type bars 30 are pivotally mounted on a pivot wire 40. Said segment comprises the crosspiece 39 as shown, vertical legs 41 and horizontal portions 42; the segment being secured curing members 43 passing through sa-id portions 42. The type bars 30 are provided with toothed gear portions 44 which are adapted to mesh with and be moved by teeth 45 on the upper and forward edge of the vertical extending portions 33 of the key members. The aforesaid geared or toothed connection is made within the slots 38 of the segment 39 and these slots, as intimated heretofore, form a guideway further to insure the accurate vertical movement of the key members 3l when the same are depressed. c

Although not necessary for an understanding of this invention I deem it desirable further to indicate the universal barstructure of my machine. A universal b ar 46 extends across the machine under the portions 31 of the key operated members and isv adapted to be depressed thereby. The said bar. 46 has arms 47 attached thereto which arms are ivotally mounted at 48-48. The bar furtliermore comprehends a transverse member 49 at the rear ends ofthe arms 47-47 and a rearwardly extending lever bar 50, which bar is provided with a vertically extending meinber 51 surrounded by a returning spring 52.

j When the bar or lever 46 is depressed by 'the portions 31, the rear end 51 is moved downwardly against the action of the spring 52 and, through certain connections more fully described in my copending application Serial N. 239,336, filed December 12, 1927; said universal bar serves to operate the ribbon Vvibrating mechanism, the ribbon feed mechanism and the escapement mechanism.

In Fig. 1, illustrating as it does a complete machine, further elements of thesame are shown; for instance, a ribbon vibrator guide 53 is formed integrally with arms 54, which stop so that when said key 34 isC los.,

I arms are secured to the ends of thesegment strength tampering 39, thuscomprehending a most desirable and inexpensive structure.

A. platen 55 is supported in end frames 56-56 and is adapted to be spaced rotarily by a lever 57 which, with its associated mechanism, is more fully described in' my copending application, Serial No. 236,920, filed December 1, 1927. The end frames 56 are mounted on the upper rail 57 of a carriage rail assembly embodying a lower rail 58 with separating members therebetween, these latter and the carriage rail assembly being more fully described in my copending application, ,Serial No. 191,650, filed May 16, 1927.

IIaving described the essential elements of my machine, and a complete operative reduction thereof, I will now indicate the way in which the same is assembled in a novel and ecient manner at a low cost.

After the box structure 10 has been prei' pared, as shown in FigaS, the upper bank of key operated members is placed in position (although I do not confine myself to this method of assembl the gist of the invention being in making the plates and base in the form indicated and thereafter simultaneously building up a closed front machine and at the same time supporting the key operated members for proper operation) The top plate 20 is associated with said upper bank key members and will support and enclose the vertical extending front portions 32 of said key operated vmembers as shown.l The vnext lower plate is then secured in position to close the front ofthe slots, it being 4observed that at this time the portion 23 fits flush over the protruding portion 21?), which will not only close the slots but will eventuate a smooth iush surface for each successive step of the frame.v

In'like manner each of the banks of the key operated members is positioned, and finally the space bar is placed in position. In the latter case, after the bar has been entered through the slots 26, the securing members 28 are placed in position and again a smooth step or plate is produced as shown in Flg. 1.`

This method of assembly of my improved frame portion is of marked advantage in re-- ducing the cost of themachine, and so far as and beauty are concerned inno way suffers by comparison with the 'more elaborate machines wherein the action ofnecessity re- -quires considerable more time in positioning. Moreover, the enclosed' key board is of considerable advantage, not only in preventing with the delicate parts of the ma'- chine, but 1n excludingdust or other dbris from the operating portions and the guideways.

' While I have described but one embodiment of my invention and the method of assemblin the'elements thereof, I wish it understoo that considerable modification may be out departing from the spirit of my invention, and I desire, therefore, that my invention be limited only by the prior art and the appended claims. I claim:

1. yIn a typewriting machine embodying key operated members, a frame therefor comprising a box member having a bottom and walls rising therefrom and plates disposable on said walls for building up an enclosed frame for said machine, the front portion of the side walls of said box being stepped and said plates being shaped to interfit with said stepped walls to comprehend a-stepped cas-l one of ing front for the'several key banks, said plates-being placeable at the lowermost step, and a space bar accommodated thereby, said lowermost plate being slotted to receive portions of said bar, and securing members associable with said latter plate to produce a Hushv surface structure.

2. In a typewriting machine embodying key operated members, a frame therefor comprising a box member having a bottom and walls rising therefrom and plates disposable on said walls for building up an enclosed frame for said machine, the front portion of the side walls of said box being stepped and said plates being shaped to interfit with said stepped walls to comprehend a stepped casing front for the several key banks, each of said plates being of Z-bar structure in cross-section 'with the lower portion thereof slottedy and the upper portion of 'said plates adapted to interit with the lower portion of the next higher plate.

3.u In a typewriting machine embodying key operated members, a frame therefor comprising a box member having a bottom and walls rising therefrom and plates disposable on said walls for building up an enclosed frame for said machine, the front portion of the side walls of said box being stepped and said plates being shaped to interit with said stepped walls to comprehend a stepped casin front for the several key banks, each of said plates being of Z-bar structure in crossseetion, with the upper portion of each plate adapted to intert with the lower portion of the next higher plate.

4. In a typewriting machine embodying key operated members, a frame therefor comprlsing a box member having a bottom and end walls rising therefrom and plates disposable on said walls for building up an enclosed frame for said machine, the front portion of the side walls ofsaid box being stepped and said plates being shaped to interfit with said stepped-walls to comprehend a stepped casin'g` front for the several key banks, each of said plates being of Z-bar structure in crosssection, the upper portion of said bar adapted to interfit with the lower portion of the next 'higher plate, and each of said plates having the side walls of said ears at theends thereof to permit of securing to said side walls.

5. In a. typewriting machine embodying key operated members, a frame therefor comprising a box member having a bottom and end walls rising therefrom and plates disposable on said walls'for building up an enclosed frame for said machine, the front portion of the side walls of said box being stepped and said plates being shaped to interlit with said stepped walls to comprehend a stepped casing front for the several key banks, each of said plates being of Z-bar structure in cross-section, the upper portion thereof being adapted to interit with the lower portion of the next higher plate, each of said plates having ears at the end thereof to permit of securing to said side walls and said side wall portions being recessed com plemental to said ears to eventuate a flush side wall when said frame assembly is com'- pleted.

6. In a typewriting machine embodying key operated members, a'frame therefor comprising a box member having a bottom and walls rising therefrom and plates disposable on said walls for building -up an enclosed frame for said machine, the front portion of the side walls of said box being stepped and said plates being shaped to interlit with said stepped walls to comprehend a stepped casing front for the several key banks, each of said plates being of Z-bar structure in cross-section with the lower portion the'reof slotted and the upper portionthereof being adapted to interfit with the lower portion of thenext higher plate, and said lower portions being of plural thickness vwith the bottom guide plate extending transversely of said machine and under said stepped plates and slotted under each of the slots in said stepped plates to receive vertically moving portions of said key operated members.

9. In a typewriting machine embodying key operated members, a frame therefor co prising a box member having a bottom and walls rising therefrom and plates disposable on said walls for building up an enclosed frame for said machine, the front portion of the side walls of said box being stepped and said plates being shaped to interfit with said stepped walls to comprehend a stepped casing front for the several key banks, each of said plates being of Z-bar structure in cross-section with the lower portion thereof slotted and the upper portion adapted to interfit with the lower portion of the next higher plate, the upper portion of the top-most plate of said series, including, in addition to said slots, a properly shaped top plate conformation.

In witness whereof, I have hereunto subscribed my name.

. GARBELL.

thickness extending forwardly to provide a rest for said upper portion when the latter is intertted with the plate next above.

`7. In a typewriting machine embodying key operated members, a frame therefor comprising a box member having a bottom and walls rising therefrom and plates disposable on said walls for building up an enclosed frame for said machine, the front portion of the side walls of said box being stepped and said plates being shaped to interfit with said' stepped walls to comprehend a stepped casing front for the several key banks, and a guide plate extending transversely of said machine and under saidV stepped plates oand adapted to receive portions of said key operated members. Y

8. In a typewriting machine embodying key operated members, a frame therefor comprising a box member walls rising therefrom on said walls for building up" an enclosed frame for said'machine, the front portion of box being stepped and said plates being shaped to interlit with said stepped walls to comprehend a stepped cas- ""mg front for the several key banks, and a having arbottom and and plates disposablev 

